12361234912728 has 32 divisors (see below), whose sum is σ = 33280247842800. Its totient is φ = 3803456896128.

The previous prime is 12361234912723. The next prime is 12361234912753. The reversal of 12361234912728 is 82721943216321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361234912723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19809671023 + ... + 19809671646.

Almost surely, 2^{12361234912728} is an apocalyptic number.

It is an amenable number.

12361234912728 is an abundant number, since it is smaller than the sum of its proper divisors (20919012930072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12361234912728 is a wasteful number, since it uses less digits than its factorization.

12361234912728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39619342691 (or 39619342687 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 12361234912728 in words is "twelve trillion, three hundred sixty-one billion, two hundred thirty-four million, nine hundred twelve thousand, seven hundred twenty-eight".